Laundry detergent compositions containing lipolytic enzyme and amines
The present invention relates to laundry detergent compositions containing a lipolytic enzyme (lipase) and specially selected primary and/or tertiary amines. The compositions provide enhanced cleaning of grease/oil soils and stains, particularly when used in a pre-treat laundering process for cleaning fabrics stained with grease/oil soils.
Latest Procter & Gamble Company Patents:
Claims
1. A liquid laundry detergent composition comprising the following:
- (A) a lipase enzyme at a level of 2 to 20,000 LU/g;
- (B) 1% to 40% of a surfactant; and
- (C) a tertiary amine having the formula R.sub.1 R.sub.2 R.sub.3 N wherein R.sub.1 and R.sub.2 are C.sub.1 -C.sub.8 alkyl chains or ##STR7## wherein R.sub.5 is H or C.sub.1 or C.sub.2 alkyl and x is an integer between 1 and 6; R.sub.3 is R.sub.4 X(CH.sub.2).sub.n wherein X is --NH--, R.sub.4 is a C.sub.4 -C.sub.12 alkyl chain, and n is 2 or 3.
2. The liquid detergent composition according to claim 1 wherein said lipolytic enzyme is a lipase enzyme which is a mutant lipase enzyme comprising the D96L mutation.
3. The liquid detergent composition according to claim 2 wherein said mutant lipase enzyme is a mutated enzyme D96L derived from Humicola lanuginosa.
4. The liquid detergent composition according to claim 3 wherein said mutated enzyme D96L is present in said composition at a level such that the mutated enzyme D96L is present in a wash solution including said composition at a level from 50 LU to 8500 LU per liter of said wash solution.
5. The liquid detergent composition according to claim 4 wherein said mutated enzyme D96L is present in said composition at a level such that the mutated enzyme D96L is present in a wash solution including said composition at a level from 100 LU to 7500 LU per liter of said wash solution.
6. The liquid detergent composition according to claim 5 wherein said mutated enzyme D96L is present in said composition at a level such that the mutated enzyme D96L is present in a wash solution including said composition at a level from 150 LU to 5000 LU per liter of said wash solution.
7. The liquid detergent composition according to claim 1 wherein said mutated enzyme D96L is present in said composition at a level from about 10 to about 6,000 LU/g of said composition.
8. The liquid detergent composition according to claim 7 wherein said mutated enzyme D96L is present in said composition at a level from about 200 to about 2,000 LU/g of said composition.
9. The liquid detergent composition according to claim 1 wherein said composition further comprises water.
10. The liquid detergent composition according to claim 9 wherein said composition comprises less than 50% by weight of water.
11. The liquid detergent composition according to claim 10 wherein said composition comprises less than 30% by weight of water.
12. The liquid detergent composition according to claim 1 wherein said composition further comprises an ingredient selected from the group consisting of builders, enzymes, and mixtures thereof.
13. A method for laundering greasy/oily stained fabrics in need of laundering comprising contacting said fabrics with an aqueous solution comprising a liquid laundry detergent composition comprising:
- (A) a lipase enzyme at a level of 2 to 20,000 LU/g of said composition;
- (B) 1% to 40% of a surfactant; and
- (C) a tertiary amine having the formula R.sub.1 R.sub.2 R.sub.3 N wherein R.sub.1 and R.sub.2 are C.sub.1 -C.sub.8 alkyl or ##STR8## wherein R.sub.5 is H or C.sub.1 and C.sub.2 alkyl and x is an integer between 1 and 6; R.sub.3 is R.sub.4 X(CH.sub.2).sub.n wherein X is --NH--, R.sub.4 is a C.sub.4 -C.sub.12 alkyl chain, and n is 2 or 3.
14. A method for pretreating fabrics having greasy/oily stains comprising contacting said greasy/oily stains with a liquid detergent composition comprising:
- (A) a lipase enzyme at a level of 2 to 20,000 LU/g of said composition;
- (B) 1% to 40% of a surfactant; and
- (C) a tertiary amine having the formula R.sub.1 R.sub.2 R.sub.3 N wherein R.sub.1 and R.sub.2 are C.sub.1 -C.sub.8 alkyl chain or ##STR9## wherein R.sub.5 is H or C.sub.1 or C.sub.2 alkyl and x is an integer between 1 and 6; R.sub.3 is R.sub.4 X(CH.sub.2).sub.n wherein X is --NH--, R.sub.4 is a C.sub.4 -C.sub.12 alkyl chain and n is 2 or 3.
15. The method according to claim 14 wherein said greasy/oily stains are contacted by said liquid detergent composition for from about 30 seconds to about 24 hours.
16. The method according to claim 15 wherein said greasy/oily stains are contacted by said liquid detergent composition for from about 1 to about 180 minutes.
3755085 | August 1973 | Tivin et al. |
4728453 | March 1, 1988 | Choy |
4758378 | July 19, 1988 | Raemdonck et al. |
4846980 | July 11, 1989 | Upadek et al. |
4867895 | September 19, 1989 | Choy |
5019292 | May 28, 1991 | Baeck et al. |
5068064 | November 26, 1991 | Proietto et al. |
5308513 | May 3, 1994 | Harmalker et al. |
0171006 | February 1986 | EPX |
0171006 | December 1986 | EPX |
0588413 | March 1994 | EPX |
86/07603 | December 1986 | WOX |
92/05249 | September 1991 | WOX |
92/05249 | April 1992 | WOX |
Type: Grant
Filed: Aug 11, 1997
Date of Patent: Aug 10, 1999
Assignee: Procter & Gamble Company (Cincinnati, OH)
Inventors: Dimitris Lappas (Strombeek-Bever), Rajan Keshav Panandiker (Cincinnati, OH), Thomas Wilhelm Horner (Overijse), Robert Walter Boswell (Indian Springs, OH)
Primary Examiner: Kery Fries
Attorneys: C. Brant Cook, Kim W. Zerby, Jacobus C. Rasser
Application Number: 8/817,154
International Classification: C11D 3386; D06B 100;